The length of a human pregnancy is normally distributed with a mean of 270 days with a standard deviation of 8 days. How many days would a pregnancy last for the shortest 15%? Round answer to 2 decimal places. Answer

261.71

Step-by-step explanation:

The calculation of days is shown below:-

where,

Mean = 270

standard deviation is 8

And, the normsinv is -1.036

Now placing these values to the above formula

So, the number of days is

= 270 + (-1.036433389)  × 8

= 270 + (-8.29146711)

= 261.708533

or

= 261.71

Therefore for computing the number of days we simply applied the above formula and for (-1.036433389) please find in the attachment.

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step-by-step explanation:

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